CVE-2026-43163

MEDIUMNVD 4.74.7—
EchelonGraph scoreMEDIUM confidence

Score 4.7 from GitHub Security Advisory published 2026-05-06. NVD baseline CVSS 4.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.7EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.7Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

md/bitmap: fix GPF in write_page caused by resize race

A General Protection Fault occurs in write_page() during array resize: RIP: 0010:write_page+0x22b/0x3c0 [md_mod]

This is a use-after-free race between bitmap_daemon_work() and __bitmap_resize(). The daemon iterates over bitmap->storage.filemap without locking, while the resize path frees that storage via md_bitmap_file_unmap(). quiesce() does not stop the md thread, allowing concurrent access to freed pages.

Fix by holding mddev->bitmap_info.mutex during the bitmap update.

CVSS v3
4.7
EG Score
4.7(medium)
EG Risk
26(Track)
EG Risk 26/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity47% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

May 6, 2026

Last Modified

May 13, 2026

Advisory Details (8)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

md/bitmap: fix GPF in write_page caused by resize race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ebcacc7ca22d5e8a03a970f0621ae1d1356b9ae8
generic

md/bitmap: fix GPF in write_page caused by resize race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d92b8fac294b5f915c50e65ce4ae2262e53614ec
generic

md/bitmap: fix GPF in write_page caused by resize race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d3af62411e19752c663fe4f424dbf49d95a4cc7c
generic

md/bitmap: fix GPF in write_page caused by resize race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a437e3bf30e32846079e470c1ba5ee790bccdf89
generic

md/bitmap: fix GPF in write_page caused by resize race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9a6f8cd28bb9bb6ed86a6df19331fb08016dee7f
generic

md/bitmap: fix GPF in write_page caused by resize race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5f73c8b33df9a605a591eab72d43a969600c1f8c
generic

md/bitmap: fix GPF in write_page caused by resize race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/46ef85f854dfa9d5226b3c1c46493d79556c9589
generic

md/bitmap: fix GPF in write_page caused by resize race - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/140cc839fbeb1ddb33a8da8811b716d88d3905b7

Vendor Advisories for CVE-2026-43163(14)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(31)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-23ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-08-23ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1032.33) @ noble2026-08-23ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-08-23ubuntu
ubuntulinux-tools-ibm-edge (5.15.0.1106.110~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-08-23ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-08-23ubuntu
ubuntulinux-tools-fips-6.8 (6.8.0-134.134+fips1) @ noble2026-08-23ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-08-23ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2049.50) @ noble2026-08-23ubuntu
ubuntulinux-tools-raspi-6.8 (6.8.0-1060.64) @ noble2026-08-23ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-23ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-23ubuntu
redhatkernel-0:4.18.0-372.206.1.el8_62026-08-12redhat
redhatkernel-rt-0:3.10.0-1160.155.1.rt56.1307.el72026-07-17redhat
redhatkernel-0:6.12.0-211.33.1.el10_22026-07-13redhat
redhatkernel-0:4.18.0-477.147.1.el8_82026-06-17redhat
redhatkernel-0:4.18.0-305.194.1.el8_42026-06-17redhat
redhatkernel-0:3.10.0-1160.151.1.el72026-06-10redhat
redhatkernel-0:5.14.0-570.119.1.el9_62026-06-04redhat
redhatkernel-0:5.14.0-284.174.1.el9_22026-06-03redhat
redhatkernel-rt-0:5.14.0-284.174.1.rt14.459.el9_22026-06-03redhat
redhatkernel-0:6.12.0-55.76.1.el10_02026-06-01redhat
redhatkernel-0:4.18.0-553.126.1.el8_102026-05-28redhat
redhatkernel-rt-0:4.18.0-553.126.1.rt7.467.el8_102026-05-28redhat
redhatkernel-0:5.14.0-427.127.1.el9_42026-05-27redhat
redhatkernel-0:5.14.0-687.10.1.el9_82026-05-20redhat
linuxKernel @ 5.10.252—osv

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.103-1 ... 5.10.92-2 (53 versions)5.10.257-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (48 versions)6.1.170-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.85-1~bpo12+1 (17 versions)6.12.85-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 6.19~rc8-1~exp1 (113 versions)6.19.6-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(11)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 4× in last 7d / 58× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 163 total refreshes for this CVE.

  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-27 14:25 UTCEPSS rescore
  3. 2026-08-26 14:46 UTCEPSS rescore
  4. 2026-08-25 13:49 UTCEPSS rescore
  5. 2026-08-23 20:13 UTCEG score recompute
  6. 2026-08-23 20:13 UTCVendor advisory
  7. 2026-08-23 20:12 UTCGHSA enrichment
  8. 2026-08-23 00:19 UTCEPSS rescore
  9. 2026-08-21 23:49 UTCEPSS rescore
  10. 2026-08-20 22:55 UTCEPSS rescore
  11. 2026-08-19 17:04 UTCEPSS rescore
  12. 2026-08-18 13:48 UTCEPSS rescore
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-17 12:57 UTCEG score recompute
  15. 2026-08-17 12:57 UTCVendor advisory
  16. 2026-08-17 12:57 UTCGHSA enrichment
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 04:54 UTCEG score recompute
  19. 2026-08-16 04:54 UTCVendor advisory
  20. 2026-08-16 04:54 UTCGHSA enrichment
  21. 2026-08-16 02:14 UTCEPSS rescore
  22. 2026-08-14 03:29 UTCVendor advisory
  23. 2026-08-14 03:29 UTCGHSA enrichment
  24. 2026-08-13 01:07 UTCVendor advisory
  25. 2026-08-13 01:07 UTCGHSA enrichment
Show 75 more
  1. 2026-08-12 01:29 UTCVendor advisory
  2. 2026-08-12 01:29 UTCGHSA enrichment
  3. 2026-08-11 01:51 UTCVendor advisory
  4. 2026-08-11 01:51 UTCGHSA enrichment
  5. 2026-08-10 02:14 UTCEG score recompute
  6. 2026-08-10 02:14 UTCVendor advisory
  7. 2026-08-10 02:14 UTCGHSA enrichment
  8. 2026-08-09 13:46 UTCEPSS rescore
  9. 2026-08-09 02:36 UTCEG score recompute
  10. 2026-08-09 02:36 UTCVendor advisory
  11. 2026-08-09 02:36 UTCGHSA enrichment
  12. 2026-08-08 16:37 UTCEPSS rescore
  13. 2026-08-08 01:32 UTCEG score recompute
  14. 2026-08-08 01:32 UTCVendor advisory
  15. 2026-08-08 01:32 UTCGHSA enrichment
  16. 2026-08-07 01:54 UTCVendor advisory
  17. 2026-08-07 01:54 UTCGHSA enrichment
  18. 2026-08-05 22:21 UTCEG score recompute
  19. 2026-08-05 22:21 UTCVendor advisory
  20. 2026-08-05 22:21 UTCGHSA enrichment
  21. 2026-08-05 19:17 UTCEPSS rescore
  22. 2026-08-04 15:10 UTCEPSS rescore
  23. 2026-08-04 04:32 UTCEG score recompute
  24. 2026-08-04 04:32 UTCVendor advisory
  25. 2026-08-04 04:32 UTCGHSA enrichment
  26. 2026-08-03 10:36 UTCEPSS rescore
  27. 2026-08-03 04:53 UTCVendor advisory
  28. 2026-08-03 04:53 UTCGHSA enrichment
  29. 2026-08-02 05:09 UTCEG score recompute
  30. 2026-08-02 05:09 UTCVendor advisory
  31. 2026-08-02 05:09 UTCGHSA enrichment
  32. 2026-08-02 02:27 UTCEPSS rescore
  33. 2026-08-01 04:16 UTCEPSS rescore
  34. 2026-07-30 16:28 UTCEPSS rescore
  35. 2026-07-30 01:30 UTCEPSS rescore
  36. 2026-07-28 15:36 UTCEPSS rescore
  37. 2026-07-27 14:13 UTCEPSS rescore
  38. 2026-07-26 14:54 UTCEPSS rescore
  39. 2026-07-26 14:54 UTCEPSS rescore
  40. 2026-07-25 14:18 UTCEPSS rescore
  41. 2026-07-24 14:17 UTCEPSS rescore
  42. 2026-07-23 03:13 UTCEG score recompute
  43. 2026-07-22 14:08 UTCEPSS rescore
  44. 2026-07-21 15:24 UTCEPSS rescore
  45. 2026-07-20 17:08 UTCEPSS rescore
  46. 2026-07-19 17:18 UTCOSV refresh
  47. 2026-07-19 02:29 UTCEPSS rescore
  48. 2026-07-16 17:03 UTCEPSS rescore
  49. 2026-07-15 16:57 UTCEPSS rescore
  50. 2026-07-13 22:30 UTCEPSS rescore
  51. 2026-07-13 06:13 UTCEPSS rescore
  52. 2026-07-12 05:46 UTCEPSS rescore
  53. 2026-07-11 08:27 UTCEPSS rescore
  54. 2026-07-09 19:10 UTCEPSS rescore
  55. 2026-07-08 15:16 UTCEPSS rescore
  56. 2026-07-07 13:46 UTCEPSS rescore
  57. 2026-07-06 16:27 UTCEPSS rescore
  58. 2026-07-06 02:23 UTCEPSS rescore
  59. 2026-07-05 02:30 UTCEPSS rescore
  60. 2026-07-01 15:06 UTCEPSS rescore
  61. 2026-06-30 23:22 UTCEPSS rescore
  62. 2026-06-28 14:07 UTCEPSS rescore
  63. 2026-06-27 03:08 UTCEPSS rescore
  64. 2026-06-24 14:05 UTCEPSS rescore
  65. 2026-06-23 21:33 UTCEPSS rescore
  66. 2026-06-21 01:59 UTCEPSS rescore
  67. 2026-06-19 19:25 UTCEPSS rescore
  68. 2026-06-18 17:52 UTCEPSS rescore
  69. 2026-06-18 17:52 UTCEPSS rescore
  70. 2026-06-17 17:53 UTCEPSS rescore
  71. 2026-06-16 17:52 UTCEPSS rescore
  72. 2026-06-15 17:49 UTCEPSS rescore
  73. 2026-06-14 07:38 UTCVendor advisory
  74. 2026-06-14 07:38 UTCGHSA enrichment
  75. 2026-06-13 23:00 UTCEPSS rescore

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-43163?
CVE-2026-43163 is a medium vulnerability published on May 6, 2026. In the Linux kernel, the following vulnerability has been resolved: md/bitmap: fix GPF in write_page caused by resize race A General Protection Fault occurs in write_page() during array resize: RIP: 0010:writepage+0x22b/0x3c0 [mdmod] This is a use-after-free race between bitmapdaemonwork() and…
When was CVE-2026-43163 disclosed?
CVE-2026-43163 was first published in the National Vulnerability Database on May 6, 2026, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43163 actively exploited?
CVE-2026-43163 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 99.5% of all scored CVEs.
What is the CVSS score of CVE-2026-43163?
CVE-2026-43163 has a CVSS v3 base score of 4.7 (NVD).
How do I remediate CVE-2026-43163?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43163, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-43163

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